SN4 ""

No	Pattern	Freq
1	[verb] [adv] back to	232
2	[vb past] [adv] back to	113
3	[conj] [adv] back to	66
4	[coord] [adv] back to	66
5	go [adv] back to	65
6	[pron] [adv] back to	60
7	and [adv] back to	59
8	and [adv] back to	59
9	[noun] [adv] back to	54
10	[pers pn] [adv] back to	54
11	[noun sg] [adv] back to	40
12	be [adv] back to	38
13	[be] [adv] back to	38
14	went [adv] back to	32
15	[vb pp] [adv] back to	32
16	walk [adv] back to	30
17	[vb base] [adv] back to	27
18	[adv] [adv] back to	25
19	walked [adv] back to	22
20	[v-ing] [adv] back to	18
21	[to-vb] [adv] back to	17
22	it [adv] back to	16
23	[is] [adv] back to	16
24	it [adv] back to	16
25	[vb -s] [adv] back to	14
26	come [adv] back to	13
27	is [adv] back to	11
28	him [adv] back to	11
29	[was/were] [adv] back to	11
30	he [adv] back to	11